Former Giants quarterback Jared Lorenzen was known in his playing days for his large frame, but ballooned to 500 pounds last year. He is now launching a video project to help inspire others to drop pounds, as he embarks on his own mission to lose weight, Kentucky.com reports.

The Jared Lorenzen Project will be shown on the Now Let’s Get Fit Foundation’s website, Nowletsgetfit.com, and the plan is for him to use the video journal to motivate himself to lose weight and help others do so.

“Right now, if I didn’t wake up tomorrow, it wouldn’t be a shock to many people,” Lorenzen, 36, said in a video Friday posted on the project’s Facebook page. “‘Well, yeah, you know, look how big he is? Damn.’”

Lorenzen appeared in four games for the Giants in 2006 and 2007, throwing a total of eight passes. He faced fines if he weighed more than 292 pounds. He went to training camp with the Colts in 2008, but didn’t make it to the regular season.

Lorenzen was last seen on a field for the Northern Kentucky River Monsters, an indoor team, in 2014 — listed then at 320 pounds — but that was only an estimate. (In the video, Lorenzen said he hadn’t stepped on a scale since leaving the Colts.) But his career ended with a gruesome injury.

“When I came back to play, I looked terrible. I can still remember rolling out to my left and seeing the guy coming for me and telling my body, ‘Get down, get down, get down. Throw it away and get down.’ But me being big, I didn’t have the reactionary time, I couldn’t get down before he hit me and shattered my ankle,” Lorenzen said in the video. “And my first thought is, ‘How are they going to get me off this field?’ When they had to get four people — linemen — to carry me, I’m like ‘What the heck are you doing?’ ”

But his weight continued to spiral to unfathomable levels.The video is the brainchild of filmmaker Anthony Holt. He put together the 2015 documentary “Gone in an Instant” that chronicled the story of Antoine Walker, who went from a millionaire NBA player to bankrupt and remaking himself.

Lorenzen, a record-holding star for the Kentucky Wildcats in the 2000s, and Holt met at Walker’s film debut, where the idea was hatched.

“We started spitballin’ and that’s where we came up with the idea of doing it,” Lorenzen told Kentucky.com. “There’s going to be a lot of me everywhere, but, hopefully, when we’re done, there won’t be as much of me.”

Lorenzen doesn’t have a set goal for his weight loss, but said he strives to begin living healthy and get others — particularly children — to avoid obesity.

“If I can get the other people in the community to say, ‘Look, Jared can do it, let’s jump on this bandwagon. Let’s do it,’ ” he said in the video. “To know that I can be this person that got such and such off his meds or connect him with his son or daughter, that’s all you can ask for.”

In addition to Holt, Lorenzen is working with celebrity trainer Gunnar Peterson and nutritionist Phillip Goglia.

“I’m lucky to have the team surrounding me right now. … It’s going to be hard,” he said in the video. “It’s going to be a long journey, but on the other side, there’s a whole new, call it life, on the other side.”